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Oral prep flash cards > Colregs Part C Lights and Shapes 20-31 > Flashcards

Colregs Part C Lights and Shapes 20-31 Flashcards

1
Q

Rule 20?

A

Application

a) Rules in this Part shall be complied with in all weathers

b) Rules concerning lights shall be complied with from sunset to Sunrise. During such times no other lights shall be exhibited, except for those whih annot be mistaken for these lights

(c) The lights prescribed by these Rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary.

(d) The Rules concerning shapes shall be complied with by day.

(e) The lights and shapes specified in these Rules shall comply with the provisions of Annex I to these Regulations.

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2
Q

Rule 21 Definitions ‘Masthead light’

A

(a) ‘Masthead light’ means a white light placed over the fore and aft centreline of the vessel showing an unbroken light over an arc of the horizon of 225 degrees and so fixed as to show the light from right ahead to 22.5 degrees abaft the beam on either side of the vessel.

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3
Q

Rule 21 Definitions ‘Sidelights’

A

(b) ‘Sidelights’ means a green light on the starboard side and a red light on the port side each showing an unbroken light over an arc of the horizon of 112.5 degrees and so fixed as to show the light from right ahead to 22.5 degrees abaft the beam on its respective side.
In a vessel of less than 20 metres in length, the sidelights may be combined in one lantern carried on the fore and aft centreline of the vessel.

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4
Q

Rule 21 Definitions ‘Sternlight’

A

(c) ‘Sternlight’ means a white light placed as nearly as practicable at the stern showing an unbroken light over an arc of the horizon of 135 degrees and so fixed as to show the light 67.5 degrees from right aft on each side of the vessel.

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5
Q

Rule 21 Definitions ‘Towing light’

A

(d) ‘Towing light’ means a yellow light having the same characteristics as the ‘sternlight’ defined in paragraph I of this Rule.

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6
Q

Rule 21 Definitions ‘All-Round Light’

A

(e) ‘All-round light’ means a light showing an unbroken light over an arc of the horizon of 360 degrees.

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7
Q

Rule 21 Definitions ‘Flashing Light’

A

(f) ‘Flashing light’ means a light flashing at regular intervals at a frequency of 120 flashes or more per minute.

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8
Q

Which Annex contains technical details of lights?

A

Annex I

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9
Q

Rule 22
Visibility of lights
(a) In vessels of 50 metres or more in length:

A

– a masthead light, 6 miles;
– a sidelight, 3 miles;
– a sternlight, 3 miles;
– a towing light, 3 miles;
– a white, red, green or yellow all-round light, 3 miles

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10
Q

Rule 22
Visibility of lights
(b) In vessels of 12 metres or more in length but less than 50 metres in length:

A

– a masthead light, 5 miles; except that where the length of the vessel is less than 20 metres, 3 miles;
– a sidelight, 2 miles;
– a sternlight, 2 miles;
– a towing light, 2 miles;
– a white, red, green or yellow all-round light, 2 miles

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11
Q

Rule 22
Visibility of lights
(c) In vessels of less than 12 metres in length:

A

a masthead light, 2 miles;
– a sidelight, 1 mile;
– a sternlight, 2 miles;
– a towing light, 2 miles;
– a white, red, green or yellow all-round light, 2 miles.

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12
Q

Rule 22
Visibility of lights
(d) In inconspicuous, partly submerged vessels or objects being towed:

A

a white all-round light, 3 miles.

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13
Q

Rule 23
Power-driven vessels Underway
(a) A power-driven vessel underway shall exhibit:

A

(i) a masthead light forward;
(ii) a second masthead light abaft of and higher than the forward one; except that a vessel of less than 50 metres in length shall not be obliged to exhibit such light but may do so;
(iii) sidelights;
(iv) a sternlight.

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14
Q

Rule 23
Power-driven vessels Underway
(b) An air-cushion vessel when operating in the non-displacement mode shall,

A

in addition to the lights prescribed in paragraph (a) of this Rule, exhibit an all-round flashing yellow light.

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15
Q

Rule 23
Power-driven vessels Underway
(c) A WIG craft ONLY when taking-off, landing and in flight near the surface

A

shall, in addition to the lights prescribed in paragraph (a) of this Rule, exhibit a high intensity all-round flashing red light.

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16
Q

Rule 23
Power-driven vessels Underway
(d)(i) A power-driven vessel of less than 12 metres in length may

A

in lieu of the lights prescribed in paragraph (a) of this Rule exhibit an all-round white light and sidelights;

(iii) the masthead light or all-round white light on a power-driven vessel of less than 12 metres in length may be displaced from the fore and aft centreline of the vessel if centreline fitting is not practicable, provided that the sidelights are combined in one lantern which shall be carried on the fore and aft centreline of the vessel or located as nearly as practicable in the same fore and aft line as the masthead light or the allround white light.

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17
Q

Rule 23
Power-driven vessels Underway
D) (ii) a power-driven vessel of less than 7 metres in length whose maximum speed does not exceed 7 knots

A

may in lieu of the lights prescribed in paragraph (a) of this Rule
exhibit an all-round white light and shall, if practicable, also exhibit sidelights;

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18
Q

Whats is the Arc of visability of a Mast head Light

A

225 degrees, showing an unbroken arc of visability from right ahead to 22.5 degrees abaft the beam on either side

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19
Q

What is the range of a masthead light

A

Vessels 50m or more: 6 miles
Vessels 20m or more, but less than 50m: 5 miles
Vessels 12m or more, but less than 20m : 3 Miles
Vessels less than 12m: 2 Miles
inconspicuous, partly submerged vessels or objects being towed: 3 Miles

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20
Q

What is the arc of Visabilty of a Side Light

A

112.5 Degrees, showing an unbroken arc of visability from right ahead to 22.5 degs abaft the beam

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21
Q

What is the range of a Sidelight

A

Vessels 50m or more: 3 miles
Vessels 12m or more, but less than 50m : 2 Miles
Vessels less than 12m: 1 Miles

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22
Q

What is the Arc of visability of a Stern light

A

135 showing a White light, with an unbroken arc of visability 67.5 degrees from right aft on each side of the vessel.

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23
Q

What is the Range of a stern light

A

Vessels 50m or more: 3 miles
Vessels 12m or more, but less than 50m : 2 Miles
Vessels less than 12m: 2 Miles

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24
Q

What is the Range of a towing light?

A

Vessels 50m or more: 3 miles
Vessels 12m or more, but less than 50m : 2 Miles
Vessels less than 12m: 2 Miles

The same as a Stern light

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25
Q

What is the Range of a white, red, green or yellow all-round light

A

Vessels 50m or more: 3 miles
Vessels 12m or more, but less than 50m : 2 Miles
Vessels less than 12m: 2 Miles

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26
Q

Why can you not tell the length of a vessel engages in Fishing other than Trawling

A

The additional White light signals outlying gear of more than 150m, it is not a masthead light

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27
Q

Which vessels can you tell wether or not they are under way or making way

A

Nuc, wether ot not it has side lights/stern light
RAM,
Fish, Side lights and stern light
Citation needed

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28
Q

Rule 21?

A

Definitions , for Part C, Lights and Shapes

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29
Q

Rule 22?

A

Visibility of lights (Ranges of each light)
The lights prescribed in these Rules shall have an intensity as specified in Section 8 of Annex I to these Regulations so as to be visible at the following minimum ranges:

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30
Q

Rule 23?

A

Power-driven vessels underway

31
Q

Rule 24 a?

A

Rule 24
Towing and pushing
A vessel showing shall have 2 masthead lights in a vertical line, unless the length of tow exceeds 200m, then 3 masthead lights
side lights
sternlight
Towing light in a vertical lline above the sternlight
If length of tow exceeds 200m a diamond shape

32
Q

Rule 25?

A

Rule 25
Sailing vessels underway and vessels UNDER OARS

33
Q

A sailing vessel underway shall exhibit?

A

(a) A sailing vessel underway shall exhibit:
(i) sidelights;
(ii) a sternlight.

(b) In a sailing vessel of less than 20 metres in length the lights prescribed in paragraph (a) of this Rule may be combined in one lantern (a Tricolour) carried at or near the top of the mast where it can best be seen.

(c) A sailing vessel underway may, in addition to the lights prescribed in paragraph (a) of this Rule, exhibit at or near the top of the mast, where they can best be seen, two all-round lights in a vertical line, the upper being red and the lower green, but these lights shall not be exhibited in conjunction with the combined lantern permitted by paragraph (b) of this Rule.

34
Q

Lights for a sailing vessel less than 7m or a vessel under oars?

A

25, (d) A sailing vessel of less than 7 metres in length or vessel under oars shall, if practicable, exhibit the lights prescribed in paragraph
(a) (side lights and sternlight )
or
(b) (a Tricolour)
of this Rule, but if she does not, she shall have ready at hand an electric torch or lighted lantern showing a white light which shall be exhibited in sufficient time to prevent collision;

35
Q

Rule 26 (a)

A

Fishing vessels

(a) A vessel engaged in fishing, whether underway or at anchor, shall exhibit only the lights and shapes prescribed in this Rule.

36
Q

26 (b) A vessel when engaged in trawling?

A

(b) A vessel when engaged in trawling, by which is meant the dragging through the water of a dredge net or other apparatus used as a fishing appliance, shall exhibit:
(i) two all-round lights in a vertical line, the upper being green and the lower white, or a shape consisting of two cones with their apexes together in a vertical line one above the other;
(ii) a masthead light abaft of and higher than the all-round green light; a vessel of less than 50 metres in length shall not be obliged to exhibit such a light but may do so;
(iii) when making way through the water, in addition to the lights prescribed in this paragraph, sidelights and a sternlight.

37
Q

26 (c) A vessel engaged in fishing?

A

(c) A vessel engaged in fishing, other than trawling, shall exhibit:
(i) two all-round lights in a vertical line, the upper being red and the lower
white, or a shape consisting of two cones with apexes together in a vertical line one above the other;
(ii) when there is outlying gear extending more than 150 metres horizontally from the vessel, an all-round white light or a cone apex upwards in the direction of the gear;
(iii) when making way through the water, in addition to the lights prescribed in this paragraph, sidelights and a sternlight.

38
Q

26 d, additional signals for fishing

A

(d) The additional signals described in Annex II to these Regulations apply to a vessel engaged in fishing in close proximity to other vessels engaged in fishing.

2 vertical white lights, shooting nets
1 White over 1 Red, Hauling nets
2 vertical red lights, Nets fast upon obstruction

39
Q

Annex II general
Distance apart?
Visable range?

A

Additional signals for fishing vessels fishing in close proximity

be placed where they can best be seen.
They shall be at least 0.9 metre apart but at a lower level than lights prescribed in Rule 26(b)(i) and (c)(i).
The lights shall be visible all round the horizon at a distance of at least 1 mile but at a lesser distance than the lights prescribed by these Rules for fishing vessels.

40
Q

26 (e) A vessel when not engaged in fishing?

A

(e) A vessel when not engaged in fishing shall not exhibit the lights or shapes prescribed in this Rule, but only those prescribed for a vessel of her length.

41
Q

Rule 27?

A

Vessels not under command or restricted in their ability to
manoeuvre

42
Q

(a) A vessel not under command shall exhibit:

A

(a) A vessel not under command shall exhibit:
(i) two all-round red lights in a vertical line where they can best be seen;
(ii) two balls or similar shapes in a vertical line where they can best be seen;
(iii) when making way through the water, in addition to the lights prescribed in this paragraph, sidelights and a sternlight.

43
Q

(b) A vessel restricted in her ability to manoeuvre?

A

(b) A vessel restricted in her ability to manoeuvre, except a vessel engaged in mine clearance operations, shall exhibit:
(i) three all-round lights in a vertical line where they can best be seen. The
highest and lowest of these lights shall be red and the middle light shall be white;
(ii) three shapes in a vertical line where they can best be seen. The highest and lowest of these shapes shall be balls and the middle one a diamond;
(iii) when making way through the water, masthead light or lights, sidelights and a sternlight, in addition to the lights prescribed in sub-paragraph (i);
(iv) when at anchor, in addition to the lights or shapes prescribed in sub-paragraphs (i) and (ii), the light, lights or shape prescribed in Rule 30.

44
Q

ADDITIONAL signals for a vessel engaged in dredging or underwater operations when restricted in her ability to manœuvre and an obstruction exists

A

(i) two all-round red lights or two balls in a vertical line to indicate the side
on which the obstruction exists;
(ii) two all-round green lights or two diamonds in a vertical line to indicate the
side on which another vessel may pass;
(iii) when at anchor, the lights or shapes prescribed in this paragraph instead of
the lights or shapes prescribed in Rule 30.

45
Q

(f) A vessel engaged in mine clearance operations

A

(f) A vessel engaged in mine clearance operations shall in addition to the lights prescribed for a power-driven vessel in Rule 23 or for a vessel at anchor in Rule 30 as appropriate, exhibit three all-round green lights or three balls. One of these lights or shapes shall be exhibited near the foremast head and one at each end of the fore yard. These lights or shapes indicate that it is dangerous for another vessel to approach
within 1000 metres of the mine clearance vessel.

46
Q

Rule 28?

A

Vessels constrained by their draught

A vessel constrained by her draught may, in addition to the lights prescribed for power-driven vessels in Rule 23, exhibit where they can best be seen three all-round red lights in a vertical line, or a cylinder

47
Q

Rule 29?

A

Pilot vessels
(a) A vessel engaged in pilotage duty shall exhibit:
(i) at or near the masthead, two all-round lights in a vertical line, the upper being white and the lower red;
(ii) when underway, in addition, sidelights and a sternlight;
(iii) when at anchor, in addition to the lights prescribed in subparagraph (i), the light, lights or shape prescribed in Rule 30 for vessels at anchor.
(b) A pilot vessel when not engaged on pilotage duty shall exhibit the lights or shapes prescribed for a similar vessel of her length.

(You cannot tell the length of a pilot vessel when underway)
(you also cannot tell if making way)

48
Q

Rule 30?

A

Anchored vessels and vessels aground

(a) A vessel at anchor shall exhibit where it can best be seen:
(Vessels are at anchor so long as the anchor is down and is holding. When weighing anchor, a vessel continues to be at anchor until the anchor is out of the ground.)
(i) in the fore part, an all-round white light or one ball;
(ii) at or near the stern and at a lower level than the light prescribed in subparagraph (i), an all-round white light.
(b) A vessel of less than 50 metres in length may exhibit an all-round white light where it can best be seen instead of the lights prescribed in paragraph (a) of this Rule.
(c) A vessel at anchor may, and a vessel of 100 metres and more in length SHALL, also use the available working or equivalent lights to illuminate her decks

49
Q

Details for anchor lights shapes

A

Black Ball, not less than 0.6m in diameter, where it can be best seen
vessel less than 50m - 1 all round white light from place best seen
vessel 50m or more Fore light at least 6m above hull, and at least 4.5m above aft light
Any vessel may illuminate decks at anchor, 100m or more must

50
Q

A vessel aground?

A

30 (d) A vessel aground shall exhibit the lights prescribed in paragraph (a) or (b) (anchor lights) of this Rule and in addition, where they can best be seen:
(i) two all-round red lights in a vertical line;
(ii) three balls in a vertical line.

51
Q

Vessels not required to show anchor or aground lights?

A

(e) A vessel of less than 7 metres in length, when at anchor, not in or near a narrow channel, fairway or anchorage, or where other vessels normally navigate, shall not be required to exhibit the lights or shapes prescribed in paragraphs (a) and (b) of this Rule. (anchor lights)

(f) A vessel of less than 12 metres in length, when aground, shall not be required to exhibit the lights or shapes prescribed in sub-paragraphs (d)(i) and (ii) of this Rule. (aground lights)

52
Q

Which vessels can you not tell wether under way or making way

A

Power, sailing, towing, cbd, pilot vessels.
Underway, probably making way

53
Q

diameter of a Black Ball

A

not less than 0.6m

54
Q

position of anchor lights vessel 50m+ ?

A

forward light not less than 6m above hull, and 4.5m above aft light

55
Q

distance between day shapes, ball diamond ball etc

A

not less than 1.5m spacing

56
Q

Position of steaming lights vessel 50m+ ?

A

the forward masthead light, or if only one masthead light is carried, then that light, at a height above the hull of not less than 6 metres, and, if the breadth of the vessel exceeds 6 metres, then at a height above the hull not less than such breadth, so however that the light need not be placed at a greater height above the hull than 12 metres;

(ii) when two masthead lights are carried the after one shall be at least 4.5 metres vertically higher than the forward one.

57
Q

Diameter of cone?

A

base not less than 0.6m, height equal to base

58
Q

diameter of cylinder

A

not less than 0.6m, height twice its base

59
Q

Diameter of DIamond

A

not less than 0.6m, height of each cone equal to its base

60
Q

lights for a vessel pushing ahead as a composite unit?

A

same as for a power driven vessel

61
Q

lights for a vessel towing

A

2 masthead lights in a vertical line,
or 3 masthead lights if the length of tow is over 200m
extra masthead light aft and higher if 50m or more
Sidelights
Stern light
Towing light above and vertically in line with stern light

62
Q

shapes for a vessel towing

A

nothing if length of tow less than 200m, measured from aft to aft
diamond if over 200m, placed where best seen

63
Q

lights and shapes for a vessel being towed

A

sidelights
sternlight
if length of tow exceeds 200m, a diamond where best seen

64
Q

An inconspicuous, partly submerged vessel or object, or combination of such vessels or object being towed, shall exhibit:

A

if less than 25m in breadth, 1 all round white light at the fore and aft ends
Dracons do not need the forward one

If 25m or more in breadth, 2 additional all round white lights at the extremities of its breadth

If more than 100m in leangth, additional white lights placed so that the distance between them is not more than 100m

A diamond at the aftmost end, if the length of tow exceeds 200m, an additional diamond at the forward end

65
Q

Rule 23 A

A

(a) A power-driven vessel underway shall exhibit:
(i) a masthead light forward;
(ii) a second masthead light abaft of and higher than the forward one; except that a vessel of less than 50 metres in length shall not be obliged to exhibit such light but may do so;
(iii) sidelights;
(iv) a sternlight.

66
Q

(b) An air-cushion vessel when operating in the non-displacement mode shall

A

shall, in addition to the lights prescribed in paragraph (a) of this Rule, exhibit an all-round flashing yellow light.

67
Q

(c) A WIG craft

A

only when taking-off, landing and in flight near the surface shall, in
addition to the lights prescribed in paragraph (a) of this Rule, exhibit a high intensityall-round flashing red light.

68
Q

(d)(i) A power-driven vessel of less than 12 metres in length

A

may in lieu of the lights prescribed in paragraph (a) of this Rule exhibit an all-round white light and sidelights;

69
Q

(ii) a power-driven vessel of less than 7 metres in length whose maximum speed does not exceed 7 knots

A

may in lieu of the lights prescribed in paragraph (a) of this Rule exhibit an all-round white light and shall, if practicable, also exhibit sidelights;

70
Q

Does an anchored RAM vesel show anchor lights?

A

Yes
27 b) (iv) when at anchor, in addition to the lights or shapes prescribed in sub-paragraphs (i) and (ii), the light, lights or shape prescribed in Rule 30.

(But not if engaged in dredging, citation needed)

71
Q

Can you see both the side lights/masthead light and stern light at the same time

A

Yes by up to 5º overlap,
the lights can have up to 50% intensity from 5º inside the arc, to 5º outside

72
Q

What is different about sailing boat lights visability

A

Up to 50% intensity from 25º above and below the horizontal
Pwere driven vessels only require 5º above and below but for 60% intensity

73
Q

When should the nav lights be on?

A

In all weathers
From sunset to sunrise
And in any other condition where deemded necessary
Rule 20 Application

Oral prep flash cards (35 decks)

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